bob noffs

just joined the group an hour ago. when i started sn#400 the first time the carb leaked. went to a 1.5mm float needle jet [from stock 2.5mm]. this stopped the leak but i worried that i would not get enough fuel thru the carb. a flow test from the float needle jet with needle in place gave 9.2gph. removing the jet for a new 2.5mm [stock] is a bear so with 9 wire drill bits i enlarged the jet to 2.08mm. flow was now 12.2 gph thru the jet. i had a ''falter'' at wot and a 100 rpm drop so i again enlarged the jet to 2.5mm and now it runs smooth at wot. sooooooooooo problem could be related to the float bowl. i think bing has been supplying 2.5mm jets all along so i think you will find your float needle jet is ok.

bob noffs

hi all,

i have been building for past 9 yrs. my dakota hawk finally flew in october, 2011. handling issues have all been resolved, now working on the carb, the prop, and the jab trying to get the three of them to get along with each other!

bob noffs